Published December 2011
Method of acquiring back plugging systems with wide range density
E. M. SuleymanovaIt should be noted that density of lightened, normal Portland cement and heavier cement solutions differs about 1.5 times and their viscosity about 2 times. Therefore, mixing of solutions is not achieved and stratification process intensified during further transportation of this mixture. Taking into account the working condition, required amount cement solution of unstable density complying with mutual ingredients for Portland cement, addition and amount of water for each option for mixture is fixed. If ultimate amount of mixed water needed for application of method, as well as for every cement solution remains unchanged there is possibility for densities and viscosities of cement solutions mixed separately to be closer.
